Catalyst for preparing 2-ethylhexyl alcohol through gas-phase hydrogenation of octenal and preparation method

A technology of ethyl hexanol and catalyst, which is applied in the field of catalyst and preparation of octenal gas-phase hydrogenation to 2-ethyl hexanol, which can solve the problems of easy pulverization of the catalyst and increase the use strength of the catalyst, and achieve high Effects of selectivity and activity

Inactive Publication Date: 2017-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to develop a gas-phase hydrogenation catalyst of octenal with high activity selectivity and high liquid resistance, adding suitable addi

Method used

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  • Catalyst for preparing 2-ethylhexyl alcohol through gas-phase hydrogenation of octenal and preparation method
  • Catalyst for preparing 2-ethylhexyl alcohol through gas-phase hydrogenation of octenal and preparation method

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0014] Example 1

[0015] Put 4L of the prepared 1mol / L sodium carbonate solution in a stirred precipitation tank, add 55g of silica sol dropwise to the alkali solution at a temperature of 60°C, age at 65°C for 20 minutes, take 1 mol / 1000mL of copper nitrate solution, 1773mL of 1M zinc nitrate solution and 100mL of 1M aluminum nitrate solution were prepared into mixed solution A, and solution A was added to the above solution at a constant speed, neutralization time was 30 minutes, and then stirred and aged at 70℃ for 30 Minutes, the filter cake is washed by concentrated washing method, filtered by pressing, and dried, added with 0.5g modifier, granulated, and the dried particles are calcined at 320°C for 2h, and then pressed into tablets to obtain catalyst sample 1.

Example Embodiment

[0016] Example 2

[0017] Put 4L of the prepared 1mol / sodium carbonate solution in a stirred precipitation tank, add 80g of silica sol dropwise to the alkali solution at a temperature of 60°C, age at 65°C for 20 minutes, and take 1mol / 790mL of copper nitrate solution, 1730mL of 1M zinc nitrate solution and 490mL of 1M aluminum nitrate solution were prepared into mixed solution A, and solution A was added to the above solution at a uniform speed, neutralization time was 30 minutes, and then stirred and aged at 70°C for 40 minutes. After washing by concentrated washing and filtering by pressing, the filter cake is obtained, dried, 2.5 g of modification aids are added, and granulated. The dried particles are calcined at 320° C. for 2 hours, and then pressed into tablets to obtain catalyst sample 2.

Example Embodiment

[0018] Example 3

[0019] Put the prepared 1mol / sodium carbonate solution 4L into it in a stirred precipitation tank, add 20g silica sol dropwise to the alkali solution at a temperature of 60°C, age at 65°C for 20 minutes, take 1M 950mL of copper nitrate solution, 1730mL of 1mol / zinc nitrate solution and 400mL of 1M aluminum nitrate solution were prepared into mixed solution A, and solution A was added to the above solution at a uniform speed, neutralization time was 30 minutes, and then stirred and aged at 70°C for 30 minutes. After washing by concentrated washing method and filtering by pressing, the filter cake was obtained, dried, added with 1.0 g of modifying additives, granulated, and the dried particles were calcined at 320°C for 2 hours, and then pressed into tablets to obtain catalyst sample 3.

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Abstract

The invention belongs to the technical field of catalysts, particularly relates to a catalyst for preparing 2-ethylhexyl alcohol through gas-phase hydrogenation of octenal, and solves the problem that the catalyst is easy to pulverize in a using process. The catalyst mainly consists of 25%-35% of copper oxide, 45%-60% of zinc oxide, 2%-10% of aluminum oxide, 2-10% of silicon dioxide and 0.01-1% of an aid. The BET specific surface area of the catalyst is 30m<2>/g-60m<2>/g, the pore volume of the catalyst is 0.17ml/g-0.30ml/g, and the average hole radius of the catalyst is 5nm-10nm. The catalyst prepared by a method disclosed by the invention has high activity and high 2-ethylhexyl alcohol selectivity, and besides, has better using strength and low color number.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a catalyst for gas-phase hydrogenation of octenal to produce 2-ethylhexanol and a preparation method thereof. Background technique [0002] Copper-based catalysts for the hydrogenation of octenal to 2-ethylhexanol have been reported in many patents and literature, such as Fr.Demande FR2,489,304 (1980); US4,626,604 (1986); Ger.Offen.DE4 ,127,318; Khim.Prom.st.1987, (10): 581~3; Russ.RU 2,052,446(1996); PCT Int. Appl. WO [0003] 97,00,131 etc. all reported catalysts for the hydrogenation of octenal to 2-ethylhexanol. Ger.Offen.DE4,127,318 describes the CuO-ZnO-Al 2 o 3 An appropriate amount of Mn, Mo, V, Zr and other elements and alkali metal oxides are added to the catalyst to improve the catalyst activity. Russ.RU2,052,446 introduced that adding Cr, Ni, Ca, Al and other elements to CuO-ZnO catalyst can improve the selectivity of the catalyst. PCT Int.Appl.WO97...

Claims

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Application Information

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IPC IPC(8): B01J23/80B01J23/83C07C29/141C07C31/125
Inventor 孙中华袁浩然殷玉圣孙远龙吴结华张觅张皓
Owner CHINA PETROLEUM & CHEM CORP
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